Below is a typical connection scheme (simplified for comprehension):
| PCIMC Card (68-pin) | Weihong Adaptor (Terminal Block) | 3D Driver (e.g., Leadshine) | |---------------------|-----------------------------------|-----------------------------| | X Step+ (Pin 1) | X-PUL+ (or X-STEP+) | PUL+ | | X Step- (Pin 2) | X-PUL- | PUL- | | X Dir+ (Pin 3) | X-DIR+ | DIR+ | | X Dir- (Pin 4) | X-DIR- | DIR- | | +24V Out | VCC (to drive common) | OPTO common (if required) | weihong cnc adaptor pcimc 3d driver work
Note: Differential signals are preferred for long distances. Some Weihong adaptors convert differential to single-ended. Check your driver’s input type. Below is a typical connection scheme (simplified for
| Parameter | Value | Rationale | | :--- | :--- | :--- | | Micro-stepping (Driver) | 1/16 or 1/32 | Reduces low-speed resonance in 3D contours. | | Pulse Frequency | 150 kHz | Stable through most adapter opto-couplers. | | Acceleration | 200 mm/s² | Prevents mechanical shudder on small arcs. | | Arc interpolation mode | Use "NURBS" or "R" mode (if CAM supports) | Reduces G-code size by 90% vs. linear segments. | | Driver current | 70% of rated | Lowers motor heating during long 3D runs (hours). | | Parameter | Value | Rationale | |
For true 3D work (e.g., 3D relief carving, mold making), the driver must support at least 20 kHz pulse input frequency and microstepping down to 1/16 or better.